505950831 has 6 divisors (see below), whose sum is σ = 730817880. Its totient is φ = 337300548.

The previous prime is 505950827. The next prime is 505950847. The reversal of 505950831 is 138059505.

It is a happy number.

It is not a de Polignac number, because 505950831 - 2² = 505950827 is a prime.

It is a super-2 number, since 2×505950831² = 511972486779181122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505950871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28108371 + ... + 28108388.

It is an arithmetic number, because the mean of its divisors is an integer number (121802980).

Almost surely, 2^505950831 is an apocalyptic number.

505950831 is a deficient number, since it is larger than the sum of its proper divisors (224867049).

505950831 is a wasteful number, since it uses less digits than its factorization.

505950831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56216765 (or 56216762 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 505950831 is about 22493.3508175194. The cubic root of 505950831 is about 796.8369011358.

The spelling of 505950831 in words is "five hundred five million, nine hundred fifty thousand, eight hundred thirty-one".